5032results about How to "Guarantee the construction quality" patented technology

The invention relates to a fracturing fluid and sand mixing semitrailer, and belongs to the field of fracturing devices for oil field work. The fracturing fluid and sand mixing semitrailer comprises a semitrailer body, a hydraulic system and an electrical control system. The hydraulic system comprises a hydraulic oil tank, at least one hydraulic pump and a hydraulic multi-way valve. An engine, the hydraulic system, the electrical control system, a lifting control chamber, a spiral conveyor, a clean water suction centrifugal pump, a fracturing fluid suction centrifugal pump, a stirring machine, a discharge centrifugal pump, a liquid adding pump, a dry powder adding device and a concentrated guanidine gum adding pump are integrated on the semitrailer body. The work steps of conducting glue solution mixing after fracturing liquid mixing is conducted and discharging the glue solution to a downward fracturing device can be conducted by operating the electrical control system to drive the hydraulic pump through an operator, and therefore work steps of oil field work are highly integrated, matched devices are reduced, workloads of working staff are reduced, and construction quality is ensured.

The invention provides a welder exercise and process evaluation device. The welder exercise and process evaluation device comprises an exercise device, an image acquisition device, a current and voltage detecting device, a data processing device and a video playing device. The exercise device comprises a welder training platform and the image acquisition device arranged on the welder training platform, wherein the image acquisition device is connected with the data processing device. The current and voltage detecting device comprises a current detecting device and a voltage detecting device. An output circuit of a welding power source of the welder training platform is connected with the current detecting device in series and connected with the voltage detecting device in parallel, and the signal output ends of the current detecting device and the voltage detecting device are connected to the input end of the data processing device through a signal optical cable. The output end of the data processing device is connected with the video playing device. The welder exercise and process evaluation device has the advantages that multimedia is fully utilized for display and processing of training content so that training exercise can be implemented, the process can be looked back upon, and the actual significance of plan training and exercise is greatly improved.

The invention discloses an assembled integral building and a construction method thereof. The assembled integral building comprises a reinforced concrete wall and floor slabs, wherein the reinforced concrete wall is formed by hoisting and assembling prefabricated composite insulating wallboards integrally at a construction site; a board body of each prefabricated composite insulating wallboard comprises a structure layer, an insulating layer and a protective layer from the inside to the outside in turn; a reinforcement cage is arranged in the structural layer; steel meshes are arranged in the concrete of the protective layer; the structural layer, the insulating layer and the protective layer are anchored together by inserting connecting members in a dotted distribution; the left and right edges of the protective layer and the insulating layer protrude out of the structural layer; a lower edge of the protective layer extends downward to form a bulged opening; the top parts of the protective layer and the insulating layer upward protrude out of the structural layer; and an upper edge of the protective layer is provided with a notch which corresponds to the bulged opening of the prefabricated composite insulating wallboard adjacent to an upper layer. The building overcomes the defects of erecting shuttering on site, binding steel bars and concreting in a traditional construction method, speeds up the construction, and lowers the construction cost; and the construction quality of the building structure can be sufficiently guaranteed.

The invention discloses an anti-seepage and leak-blocking construction method for excavation of a subway foundation pit in a soft soil area, which comprises the following steps: 1) joint pre-reinforcement construction of an underground continuous wall: constructing a pre-reinforcement structure of a high-pressure rotary jet grouting pile, guiding holes, grouting by a sleeve valve pipe, sealing the holes, guiding the holes again and pre-burying the sleeve valve pipe for standby; and 2) the excavation of the foundation pit and the anti-seepage and leak-blocking construction: using surface floating earth for clearing and using the encased steel plate reinforcement method for anti-leak treatment for the situations that joints of the underground continuous wall have defects definitely and risk points are positioned below the excavation surface of the foundation pit, adopting the hole-guiding cyanogen injection condensing method for blocking of leak points with slight water leakage situation, adopting the horizontal hole grouting method for blocking for the water leak points with serious water leakage situation, and carrying out filling, grouting and reinforcement through the pre-buried sleeve valve pipe after completing the blocking. The method has reasonable design, convenient construction, comprehensive consideration, good anti-leak and leak-blocking effect, fast leak-blocking speed and can solve the problems of pipe blocking, poor anti-leak and leak-blocking effect, slow construction progress and the like in the existing anti-leak and leak-blocking construction.

The invention relates to a method of shallow embedment and concealed excavation based on the PBA method for construction on super large cross-section of tunnel, comprising the following steps: 1. to detect the geologic cavity over the wide span tunnel structure; 2. to arrange the ground dewatering well and the tunnel horizontal well; 3. to take the horizontal channels of vertical well as the front large pipe shed on the arch part of the main body and to inject for strengthening the terrain formation; 4. to carry out the supporting arch construction on the side span of small pilot tunnel and the supporting major arch construction on the main body; 5. to excavate the soil mass of lower cross section as the extended foundation and the central partition wall; 6. to remove the bottom central partition wall section by section, construct bottom underlayer and waterproof layer, pour the reinforced concrete; 7. to remove the central partition wall of the upper part section by section and temporary steel shotcrete in the small pilot tunnel, construct the waterproof layer and concrete of the side wall and the main arch. The method of shallow embedment and concealed excavation based on the PBA method for construction on super large cross-section of tunnel has the advantages of guaranteeing the safety, quality and time limit of the construction, saving cost and enhancing work efficiency.

The invention discloses an assembled integral shear wall structure system and a construction method thereof. Prefabricated composite wallboards are hoisted and assembled integrally at a construction site; a board body of the prefabricated composite wallboards comprises a structural layer, an insulating layer and a protective layer from the inside to the outside in turn; a reinforcement cage is arranged in the structural layer; the insulating layer is an extruded polystyrene foam plastic board; steel meshes are arranged in the concrete of the protective layer; and anchor bolts in a dotted distribution are connected among the structural layer, the insulating layer and the protective layer. Vertical seams and horizontal seams of prefabricated composite walls adopt structural self-waterproofing, so that common quality problems such as leakage and cracks and the like in a traditional process are solved. The prefabricated composite walls simplify construction processes, speed up the construction, and lower the construction cost. Furthermore, products prefabricated in a factory have uniform specifications and unified quality, so that the construction quality of a building construction can be sufficiently guaranteed; the industrialization, standardization, and generalization of the building walls are realized; and the products can be widely applicable to the construction of reinforced concrete buildings in the construction industry.

The present invention relates to a method for installing a large span steel truss on high altitude. The method comprises the steps of arranging embedded part on the structure girder at two sides of the designed position of the steel truss, then installing extensible guide on the embedded part, and at last assembling a specialized steel structure tackle. Firstly, a large tonnage hoisting machine is used for hanging the steel truss which is wholly assembled underground to two tackles that are arranged on station. Afterwards, the steel trust is parallelly moved to the installation position through the synchronous slippage of two tackles on the extensible guide. Lastly, the two-end capitals of the designing position of the steel truss are installed with an independent holding pole, a chain block and a pulley assembly. These hoisting apparatuses are used for hanging the longeron from the tackle. The longeron of the lengthened part is cut and the steel truss is installed to the position according to the design requirement. Compared with the traditional high altitude dispersed splitting method for building whole surface of scaffold, the installing method provided by the invention subtly settles many abuses of difficulty for controlling the construction quality, long construction period and the like in the traditional method. The manpower and considerable material transportation are saved and the construction quality can be effectively guaranteed. Various requirements of the designing and constructing are excellently and rapidly satisfied.

The invention relates to an industrialized multi-story high-rise assembled steel structure frame - eccentrically-braced system, belonging to the technical field of structure engineering. The industrialized multi-story high-rise assembled steel structure frame - eccentrically-braced system comprises assembled truss plates, assembled flange columns and eccentric bracing members. The assembled truss plates are prefabricated in a factory. On a construction site, the assembled truss plates are spliced together through beam end closing plates or column base joints to form frame structure beam-slab layers; the frame structure beam-slab layers are vertically connected through the assembled flange columns to form a multilayer steel frame structure; on the basis of the steel frame structure, the eccentric bracing members are connected to truss beams or column bottoms in the frame structure beam-slab layers and are used as lateral-force-resistant members; and all members are prefabricated in the factory and are assembled through bolts on the construction site. In combination with modularization, factory production, standardization and assembling, the industrialized multi-story high-rise assembled steel structure frame - eccentrically-braced system has the advantages that the factory production and the on-site rapid assembling are realized; and on the premise that the construction quality is guaranteed, the construction speed is improved, the construction period is shortened and the construction cost is decreased.

The invention relates to a method for constructing an engineering pile by combining a rotary drilling rig with manual pile base chambering, which comprises the following steps: (1) preparation work before construction, including field leveling; (2) pile lofting; (3) pile casing embedding; (4) rig installation and rotary drilling; (5) manual pile base chambering; (6) rotary drilling drill quality detection; (7) reinforcement cage manufacturing; (8) reinforcement cage installation; (9) preparation before casting, mainly including hole cleaning, final hole acceptance check, and pump concrete casting quality safeguard measure; and (10) concrete casting, mainly including guide pipe installation, concrete casting and sampling for test and pile forming. In the method for constructing the engineering pile by combining the rotary drilling rig with the manual pile base chambering, the high efficiency of the rotary drilling rig is fully utilized, and the manual pile base chambering is utilized, the advantages of the rotary drilling rig and the manual pile base chambering are combined to make up the defects of the rotary drilling rig and the manual pile base chambering. The construction steps are detailed; the process flow is clear and definite; the construction quality of the engineering pile is ensured through an effective detail measure; the construction process of the rotary drilling rig and the process step of the manual pile base chambering are combined as a whole to realize the effective allocation of a construction field, a construction machine and construction time; and when the construction quality is ensured, the construction efficiency of a digging pile is greatly increased, thereby, the construction time of the engineering pile can be greatly saved, and the construction period requirement of the project is met.

The first-arch-then-beam concrete steel skeleton constructing process for through arch bridge with mooring post of steel pipe concrete includes the following steps: A. tensing permanent horizontal pre-stressed steel cable at the end cross beam; B. assembling steel pipe arch rib, floating and conveying the steel pipe arch rib and hoisting with floating crane to the site; C. controlling the displacement of abutment by using the permanent pre-stressed steel cable temporarily as the constructing pulling cable and regulating the tensing stress of the horizontal pre-stressed steel cable to bear the horizontal pushing force of the steel pipe concrete arch bridge; and D. hoisting bridge surface pre-stressed beam to site with the steel pipe concrete arch rib and suspender. Compared with conventional construction process, the present invention has fast construction speed, low cost, reduced overhead welding work load and high construction quality.

The integral building truss lifting method features that the lifting process includes assembling the main truss on ground in two units; manufacturing and installing corresponding lifting frame; setting cable system on the elevating frame and installing hydraulic elevator in corresponding position; installing the truss ground end shifting units; lifting the two elevated ends of the truss units with the hydraulic elevator synchronously while ensuring the horizontal shift of the ground ends of the truss units under the control of main computer; dismantling the ground end shifting units after the overhead butt joints are in place; elevating and fixing the ground ends; and assembling the overhead butt joints.

The invention discloses a sole plate post-poured strip form bracing system, applicable to sole plate post-poured strip form bracing of basement in constructional engineering. The form bracing system is mainly composed of components of a steel screen mould, a cable-stayed bolt and structural steel back plank, a precast slurry baffle concrete strick and a slurry baffle wood block. The invention utilizes a sole plate reinforcing mattress as a main bracing body, side pressure of concrete at the two sides of the post-poured strip can be effectively braced, the cavity of the formed post-poured strip is clean, tidy and clear and has no concrete pouring oozing or laitance pollution, most materials in the post-poured strip form bracing system are available and can be dismantled and recycled, and design function of post-poured strip can be effectively realized.

The invention belongs to the technical field of foundation pit supporting for high-rise buildings, in particular to a foundation pit support construction method combining horizontal rotary jet-grouting soil bolting and bore concrete piles, which includes steps: firstly, constructing water-stop mixed piles and bored concrete piles according to a preset foundation pit; and secondly, performing soil excavation and soil bolting layer by layer and section by section. The foundation pit support construction method has the advantages that the foundation pit support constructed by the method is high in deformation control performance and stability and especially applicable to projections with high requirements on foundation pit deformation, and the method is applicable to mega-area foundation pit supporting in soft soil areas with failure of using internal support structures, limited slope reduction conditions and excavation depth limited within 15m, and meets the requirement that development and utilization of urban underground space continue to develop.

The invention discloses an integral lifting system and a construction method for arch bridge ribs. The integral lifting system comprises a pair of triangular steel frames, two lifting stations, arch rib brackets and an integral arch rib of an arch bridge, and a barge for conveying the integral arch rib. The triangular steel frames are fixedly rested on bridge piers and symmetrically disposed on two sides of main span of the arch bridge, an arch rib closure section in closure with the integral arch rib is disposed on the inner side of the arch bridge main span and close to the corresponding triangular steel frame, the lifting stations are disposed on the triangular frames respectively, the arch rib brackets are rested on the barge and support the integral arch rib, the lifting stations are connected with the integral arch rib through lifting steel stranded wires, the integral arch rib which is lifted up is in fixed closure with the arch rib closure sections, and accordingly the integral arch bridge is formed. The integral lifting system is adaptable to severe construction environments, and accordingly construction progress is quickened. The invention further provides the construction method for integral lifting of the arch bridge rib.

The invention relates to an industrialized multi-story high-rise assembled steel structure frame - prestressed eccentrically-braced system, belonging to the technical field of structure engineering. The industrialized multi-story high-rise assembled steel structure frame - prestressed eccentrically-braced system comprises assembled truss plates, assembled flange columns and prestressed eccentric bracing members. The assembled truss plates are prefabricated in a factory. On a construction site, the assembled truss plates are spliced together through beam end closing plates or column base joints to form frame structure beam-slab layers; the frame structure beam-slab layers are vertically connected through the assembled flange columns to form a multilayer steel frame structure; on the basis of the steel frame structure, the prestressed eccentric bracing members are connected to truss beams or column bottoms in the frame structure beam-slab layers and are used as lateral-force-resistant members; and all members are prefabricated in the factory and are assembled through bolts on the construction site. In combination with modularization, factory production, standardization and assembling, the industrialized multi-story high-rise assembled steel structure frame - prestressed eccentrically-braced system has the advantages that the factory production and the on-site rapid assembling are realized; and on the premise that the construction quality is guaranteed, the construction speed is improved, the construction period is shortened and the construction cost is decreased.

The invention relates to a rotary drilling rig coordinated with percussion drill hole-forming construction method which comprises forming field, locating and paying off, measuring elevation, calculating rotary digging depth and installing a plurality of temperature sensors in a permanent steel protective cylinder; rechecking a pile position; rotationally digging and drilling into a tundra layer; burying a temporary steel protective cylinder; measuring the depth of a hole and checking the formed hole; burying the permanent steel protective cylinder into a non-tundra layer; pulling out the temporary steel protective cylinder and moving a machine to conduct next construction of forming the hole rotationally; secondarily locating and sampling; locating a percussion drill; punching the hole; meanwhile digging a mud pit, producing mud and pouring the mud into the hole; secondarily measuring the depth of the hole and checking the formed hole; cleaning the hole; processing a reinforcing cage and hanging the reinforcing cage; installing a guide tube and conducting a water sealing test on the guide tube; measuring sediment and pouring concrete underwater; and curing the concrete. The rotary drilling rig coordinated with percussion drill hole-forming construction method offers a feasible technical measure for socketed pile construction and road repairing on frozen earth on island shape frozen earth area at high altitude in China and has notable economic benefit.

The invention provides a construction method of an edge top arch and a bottom arch of a concrete pouring tunnel and relates to a construction method of the concrete pouring tunnel. The construction method is invented for mainly solving the problems of the existing concrete pouring tunnel that the construction cost is high and the like. With regard to the tunnel needing to be constructed, the bottom arch is firstly constructed and the pouring of the edge top arch is secondly constructed. The bottom arch is plastered by overturning a die; and the edge top arch adopts an integrally movable type steel pipe scaffold to be configured with a steel template to carry out a process of construction. A construction method of pouring the bottom arch of the tunnel comprises the following steps of: cleaning a rock surface and checking a foundation; measuring and setting out; mounting a steel bar; mounting the template; pre-burying a slurry filling pipe and mounting water-sealing and grounding flat irons; mounting a drain plug template; cleaning a cabin and checking; pouring concrete; and overturning the die and plastering; and maintaining. A construction method of pouring the edge top arch of the tunnel comprises the following steps of: cleaning the foundation, processing a construction seam and flushing; erecting an integrally movable bearing frame, measuring, setting out and mounting a steel arch frame; splicing the template; mounting the steel bar and a pre-buried piece; cleaning the cabin and checking; pouring the concrete; removing the template, the arch frame and the like; and maintaining. The construction method has the advantage of low construction cost.

The invention belongs to the field of earth and rockfill dam construction quality control, and belongs to a method for carrying out remote real-time monitoring and subsequent quality assessment on the milling machine excitation frequency and the excitation force. Therefore the method adopts the technical scheme that an earth and rockfill dam milling excitation frequency and excitation force real-time monitoring system and monitoring method comprises he following steps that vibration acceleration signals in the vertical direction of a milling wheel are collected in real time in the process of milling earth and rockfill dam materials by using a milling machine excitation frequency testing module arranged on a part which is arranged on a milling machine vibration wheel and does not rotate along with the vibration wheel, the frequency spectrum data of the vibration acceleration of the milling wheel is obtained through signal analog-to-digital conversion and fast Fourier transformation (FFT), a corresponding relationship among the excitation frequency, the excitation force and the milling machine position coordinates is built according to the same sampling moment, whether the excitation frequency and the excitation force of a milling machine at the current moment conform to the design standard or not is judged, and if the excitation frequency and the excitation force do not reach the standard, warning is sent. The method provided by the invention is mainly applied to the earth and rockfill dam construction quality control.

The invention relates to a precast concrete wallboard and a preparation method thereof. A wall body has a structural layer and a protection layer from inside to outside, wherein the structural layer is internally provided with a reinforcement cage, and a reinforcement fabric is arranged in the concrete of the protection layer; the protection layer is connected with the structural layer through a transverse connecting reinforcement connected to the reinforcement fabric; the left edge and the right edge of the protection layer protrude out of the structural layer; the lower edge of the protection layer downwards extends out of a protruded port; and the top of the protection layer upwards protrudes out of the structural layer; the upper edge of the protection layer has a dent corresponding to the protruded port of the adjacent precast concrete wallboard on the upper layer; and the two ends of a transverse bar of the reinforcement cage protrudes out of the left side surface and the right side surface of the structural layer of the wall body and form two rows of transverse steel ties bending inwards. The wallboard has the advantages that the construction process is simplified, the construction speed is accelerated, and the construction cost is reduced. Meanwhile, products precast by a factory have uniform specification and quality, and thus, the construction quality of a building structure can be guaranteed sufficiently. The precast concrete wallboard can be widely applied to construction of concrete steel buildings in building industry.